Journal
MATHEMATICS AND MECHANICS OF SOLIDS
Volume 18, Issue 6, Pages 634-648Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1081286513485773
Keywords
Finite elasticity; fiber reinforced material; standard reinforcing; remodeling
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Funding
- King Abdullah University of Science and Technology [KUK-C1-013-04]
- EC
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Fiber alignment in biological tissues is created and maintained by the cells, which respond to mechanical stimuli arising from properties of the surrounding material. This coupling between mechanical anisotropy and tissue remodeling can be modeled in nonlinear elasticity by a fiber-reinforced hyperelastic material where remodeling is represented as the change in fiber orientation. Here, we study analytically a simple model of fiber reorientation in a rectangular elastic tissue reinforced by two symmetrically arranged families of fibers subject to constant external loads. In this model, the fiber direction tends to align with the maximum principal stretch. We characterize the global behaviour of the system for all material parameters and applied loads, and show that provided the fibers are tensile initially, the system converges to a stable equilibrium, which corresponds to either complete or intermediate fiber alignment.
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